Industrial Communication Guide

Glossary

Profinet RT und Profinet IR PROFINET RT (Real Time) and PROFINET IRT (Isochronous Real Time) are two different technical versions of PROFINET IO which meet differing requirements in terms of the communication between components. While PROFINET RT is prioritized for standard Ether- net messages but does not define exact time slots for transmission, PROFINET IRT enables synchronized data transmission based on fi- xed cycle times, thereby meeting hard real-time requirements.

POF POF stands for Polymer Optical Fiber. The fiber is relatively simple to process. It has high attenuation, however, and therefore a low data rate and range.

PP Polypropylene

Process automation Automation of process-related operations and chemical reactions

PTFE Polytetrafluorethylene, trade name: Teflon

Production automation Automation of production of unit goods where production requires numerous manufacturing and assembly processes.

PUR Polyurethane

PVC Polyvinyl chloride

Profibus DP PROcess Field BUS Decentralized Periphery

Real-time capability Real-time capability is an application-specific requirement as to how long the transmission of information can take. If the maximum transmission time cannot be adhered to, the system does not have real-time capability.

Profibus PA PROcess Field BUS Process Automation

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